From 9c969b771a32651104f16586408deb67d7039014 Mon Sep 17 00:00:00 2001 From: rwatson Date: Tue, 18 Nov 2003 00:39:07 +0000 Subject: Introduce a MAC label reference in 'struct inpcb', which caches the MAC label referenced from 'struct socket' in the IPv4 and IPv6-based protocols. This permits MAC labels to be checked during network delivery operations without dereferencing inp->inp_socket to get to so->so_label, which will eventually avoid our having to grab the socket lock during delivery at the network layer. This change introduces 'struct inpcb' as a labeled object to the MAC Framework, along with the normal circus of entry points: initialization, creation from socket, destruction, as well as a delivery access control check. For most policies, the inpcb label will simply be a cache of the socket label, so a new protocol switch method is introduced, pr_sosetlabel() to notify protocols that the socket layer label has been updated so that the cache can be updated while holding appropriate locks. Most protocols implement this using pru_sosetlabel_null(), but IPv4/IPv6 protocols using inpcbs use the the worker function in_pcbsosetlabel(), which calls into the MAC Framework to perform a cache update. Biba, LOMAC, and MLS implement these entry points, as do the stub policy, and test policy. Reviewed by: sam, bms Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories --- sys/netatm/atm_aal5.c | 3 ++- sys/netatm/atm_usrreq.c | 4 ++++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'sys/netatm') diff --git a/sys/netatm/atm_aal5.c b/sys/netatm/atm_aal5.c index 9c11b93..81fcce8 100644 --- a/sys/netatm/atm_aal5.c +++ b/sys/netatm/atm_aal5.c @@ -112,7 +112,8 @@ struct pr_usrreqs atm_aal5_usrreqs = { atm_aal5_sockaddr, /* pru_sockaddr */ sosend, /* pru_sosend */ soreceive, /* pru_soreceive */ - sopoll /* pru_sopoll */ + sopoll, /* pru_sopoll */ + pru_sosetlabel_null /* pru_sosetlabel */ }; /* diff --git a/sys/netatm/atm_usrreq.c b/sys/netatm/atm_usrreq.c index 4cc78b7..9b58741 100644 --- a/sys/netatm/atm_usrreq.c +++ b/sys/netatm/atm_usrreq.c @@ -83,6 +83,10 @@ struct pr_usrreqs atm_dgram_usrreqs = { pru_sense_null, /* pru_sense */ atm_proto_notsupp1, /* pru_shutdown */ atm_proto_notsupp3, /* pru_sockaddr */ + NULL, /* pru_sosend */ + NULL, /* pru_soreceive */ + NULL, /* pru_sooll */ + pru_sosetlabel_null /* pru_sosetlabel */ }; -- cgit v1.1